#!/usr/bin/env python3

import types

import common

parser = common.get_argparse(argparse_args={
    'description': '''Print the value of a common.py variable.

This is useful to:

* give dry commands on the README that don't change when we refactor directory structure
* create simple bash scripts that call use common.py variables

For example, to get the Buildroot output directory for an ARM build, use:

....
./%(prog)s -a arm buildroot_build_dir
....

List all available variables:

....
./%(prog)s
....
....
'''
})
parser.add_argument('variable', nargs='?')
args = common.setup(parser)
if args.variable:
    print(getattr(common, args.variable))
else:
    for attr in dir(common):
        if not attr.startswith('__'):
            val = getattr(common, attr)
            if not callable(val) and not type(val) is types.ModuleType:
                print('{} {}'.format(attr, val))
